A program named LibreVR has landed on GitHub, allowing users to play games on the HTC Vive which were elusively developed for the Oculus Rift. So far, Lucky's Tale and Oculus Dreamdeck are the only titles which have been tested on the HTC Vive using LibreVR, but there shouldn't be any issues is someone tries to use other Oculus Rift games with the HTC Vive.